@Stef_Funaro 

Are you able to visit your website from outside of the tplink network? If you can, it seems like a NAT loopback issue.

But anyway you should try to upgrade the firmware to the newest. Sometimes the note may not contains all updating. And you can downgrade the firwmare in any case if necessary.

  @Somnus Yes, websites work from outside. Works from inside too, but go through the Internet to access it instead of staying inside the network. 

Will try to update the firmware today.

Thanks.

Tried updating the firmware to: ER605(UN)_v2_2.0.1 Build 20220223

The problem is still there, tried many settings, cannot make it work. Is there people from tp-link reading this forum ? Thinking of returning the product, we cannot use it like this. 

EDIT

  @Tedd404 Yes. The server is internal, but when a computer on the local network goes to the URL of the server, we see that it goes through the web to serve the webpages. We see it because:
1. it's very slow (the webserver is one inch away from my laptop)
2. we see the visits logs of the web server and the visitor IP is not our internal IP
3. The apache server ask us a password, but is configured to let pass the internal IP adresses:
Deny from all
    Allow from 192.168.1.0/24
    Allow from 127

If we use the local IP of the server (http://192.168.1.135) it works fine.

We switch from our router to the other (old linksys and new tp-link), everything is OK with the old one. The domain name is not entered nowhere in the router's settings, we're sure of this because we recently added a new domain name and we didn't have to touch anything on the router to make it work. And we add new subdomains almost every week (each project gets it's subdomain). 

Thanks!


 

  @btx There's no DNS server on our old linksys, but it works. Since the domain is pointing to our IP, the router should keep the traffic on the local network. 
No DNS is required internally, it's NAT loopback / NAT hairpin and this router should support it. 

  @Tedd404 The DNS are the one the ISP provides. Weird fact, I don't know if it's related, but the linksys gets the static IP and everything (DNS, gateway, subnet mask) automatically. The tp-link does not, he gets another dynamic IP. So I entered manually everything the linksys gets and it works. Except for the NAT loopback... I planned to see about that with the ISP, but since it works with manual setting, this is a lesser problem. 

I don't see any DNS settings in the linksys, since I curently use the linksys while I wait to find a fix for the tp-link, I can still browse the settings, I searched every page and don't see any special DNS setting.
Here are the DNS I have on the linksys, and I use exactly the same on the tp-link:

Thanks!

Thanks!

Ok, the official answer from tp-link support seems to say that NAT loopback is not supported by the ER605!

This should be supported by this kind of product, no ?

Can anyone recommend a product that supports it ? We really need to change our router quickly and really need NAT loopback. 
If we add an omada controller maybe ? Would that change anything ?

Thanks!